Select the correct answer. Which data-gathering activity would be useful for a biomechanical analysis? A. creating a graph that compares the salaries of professional gymnasts B. comparing the numbers of female gold medalists and male gold medalists in gymnastics C. tracking the increase in the number of gymnastics programs in a city over the course of a decade D. measuring the angle at which a gymnast's body bends during an aerial flip
What is the force exerted on a moving charge of -2.0mu C at a 20^circ angle through a magnetic field of 3.0times 10^-4 T with a velocity of 5.0times 10^6m/s 3.0times 10^-3 1.0times 10^-3 1.0times 10^3
10-02-01 Which statement about electromagnetic radiation is true? It is visible to the human eye. It is always dangerous to humans. It is only hazardous to living things. It is energy in the form of waves.
8. (7 points)A tree stump is dragged 30 m by a truck with a chain at 31^circ above horizontal and tension of 17 ,000 N. Find the work done. Round to the nearest N m.
Which objects in our Milky Way Galaxy have orbits that are not similar to the orbits of stars in elliptical galaxies? halo stars disk stars satellite dwarf galaxies globular clusters bulge stars
As relating to beam spread, the larger the crystal, the __ the beam. a. broader b. longer c. tighter or narrower d. shorter
When an electric current is applied to the piezoelectric crystal, it: a. vibrates. b. produces liquid crystals. c. forms gas. d. permanently changes form.
An ideal current source produces a[n] __ value of current through a load, regardless of the value of the load. Select one: a. decreasing b. constant c. proportional d. increasing
Ohm's law is I=Vdiv R What's the voltage of the battery described? A circuit has one 10.0-ohm resistor. The current flowing through the circuit is 0.15 amps. So the battery in the circuit is a square -volt battery.
Which of the following corresponds with a high change in velocity (acceleration). during a constant period of time? There is an increase in Delta p and applied force. There is a decrease in Delta p and applied force. There is an increase in Delta p and a decrease in applied force.
$\square $ Answer Bank KE: 1000.0 J PE: 3000.0 J KE: 0J $PE:4000.0J$ KE: 2000.0 J PE: 2000.0 J KE: 4000.0 J PE: 0J
Learning Log: How do you think you get something to have more kinetic energy?
If a UV light unit has four lamps in it, and each lamp is 7-watt, it is known as a __ 7-watt unit 28-watt unit 11-watt unit 3-watt unit
10. What is the mass of a meteorite that is traveling towards Earth at $1,760m/s$ with a momentum of $33,400kgm/s$
Where is the energy coming from in the lab (where does it start)? A Potential energy in the Cheeto B Potential energy in the water C Kinetic energy inside the water D Kinetic energy in the Cheeto
What should happen to the temperature of the water? A It stays the same B It goes down C It goes up
9. Your local weather report announces that the barometric pressure is 30.44 inHg. Convert this pressure to psi, atm torr, and Pa.
Express the temperature, 275.18 K in degrees Celsius. $548.33^{\circ }C$ $274.17^{\circ }C$ $2.03^{\circ }C$ $120.88^{\circ }C$ $22.78^{\circ }C$
Hubble's Law has led physicists and astronomers to the hypothesis that the universe is expanding. True False
Newton determined that the force of gravity on an object is proportional to its mass causing its mass to be canceled out (Newton's second law) and resulting in a constant acceleration. If the laws of physics are universal, then Newton should be able to apply his discoveries about gravity on Earth to the motion of the planets in our Solar System. Newton's third law says that for every force there is an equal reaction force in the opposite direction. What does this imply about the force of gravity associated with a person standing on the Earth? Choose one: A. The force of gravity on the person cancels out to zero. B. The Earth's gravity pulls downward on the person but also pushes upward on them. C. The Earth's gravity pulls downward on the person, and the person's gravity pulls upward on the Earth. D. There is twice as much gravitational force on the person than there would be if it weren't for Newton's third law.
